化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)

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化简6a+13a6x-28-2.5x+30.58a-(5a+8)(5x+7)-(4x+0.18)化简6a+13a6x-28-2.5x+30.58a-(5a+8)(5x+7)-(4x+0.18)化简6a

化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)

化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
我想这是几道题吧?6a+13a =19a; 6x-28-2.5x+30.5 =3.5x+2.5; 8a-(5a+8)=3a-8
(5x+7)-(4x+0.18)=x+6.82